Business Insider's own Steve Kovach calls it a heavier, more expensive version of the same tablet.

But it's not all bad news – David Pogue of the New York Times was won over by its full-blown Windows functionality.

Let's get to the highlights of some of these reviews.

Joanna Stern, ABC News: "The Surface Pro is a good choice for a niche mobile user, one who is willing to pay $1,000 for the power and robustness of a full Windows computer in a small and very compelling form factor. Many people, however, will likely prefer to get a tablet and buy a separate Windows laptop, so they don't have to make another compromise."

Walt Mossberg, All Things D: "I like the original Surface and see it as a tablet with the extra benefit of some Microsoft Office programs. However, I am less enamored with the Surface Pro. It’s too hefty and costly and power-hungry to best the leading tablet, Apple’s full-size iPad. It is also too difficult to use in your lap. It’s something of a tweener — a compromised tablet and a compromised laptop."

David Pierce, The Verge: "If you're going to buy a Surface, buy the Surface Pro. Period. (And buy the 128GB model.) But if you're going to buy a $900 tablet, get the decked-out iPad with LTE and 128GB of storage, and if you're going to buy a Windows laptop, check out the Lenovo IdeaPad Yoga or the Dell XPS 12. Which leads me back to the same question Josh asked about the Surface RT: who is this for?"

Steve Kovach, Business Insider: "The Surface Pro is just like the first Surface except it's thicker, heavier, costs at least $400 more, and has about half the battery life. It looks like a tablet, but you can snap on an optional (but essential) keyboard cover that turns the Surface Pro into a pseudo-laptop. So why would anyone buy that?"

David Pogue, New York Times: "The Surface Pro is an important idea, almost a new category, and it will be the right machine for a lot of people. It strikes a spot on the size/weight/speed/software spectrum that no machine has ever struck. You can use this thing on a restaurant table without looking obnoxious (much). You can hold it in one hand to read a Kindle book while you’re standing in line. And wow, is it happy on an airplane tray table. Lean back all you want, pal. I’m getting work done."